Shade-holder.



E. E. FORSTROM. SHADE HOLDER. APPLICATION FILED NOV. 29, 1911.

Patented 'Feb. 20, 1912.

INYEIYTOE UNITED STATES PATENT OFFICE.

EDWARD E. FORSTROM, OF BRIDG'EPORT, CONNECTICUT, ASS-IGNOR TO THE BRYANTELECTRIC COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF GON-NECTICUT.

SHADE-HOLDER.

Application filed November 29, 1911.

Specification of Letters Patent.

To all whom 'it may concern:

Be it known that I, EDWARD E. FoRsTnoM, a subject of the King of Sweden,and residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented a certain new and useful Improvement inShade-Holders, of which the following is a specification.

The present invention relates to shade holders, and the particularobject of my invention is to provide simple and efficient means forsecuring the same to a support, such, for instance, as the casing of anelectric lamp socket.

In the accompanying drawing, Figure 1 is a side elevation of a standardelectric lamp socket; Fig. 2 is a vertical section through the shadeholder parts detached; and Fig. 3 is a side elevation partly in sectionof my improved shade holder mounted upon a lamp socket.

The present invention is not concerned with the particular meansemployed for carrying the shade or globe upon the holder, and I haveshown, by way of example merely, a common spring ring 5 supported inslots in the peripheral flange 6 of a shade holder body 7. Any othersuitable globeholding device may be employed without departing from thepresent invention.

As the support to which the shade holder is attached I have illustratedin the present instance a standard electric lamp socket 8, withsupporting beadv 9, adjacent the lampreceiving end thereof. To mount theshade holder thereon, I provide an expansible ring 10 with head 11,corresponding substan tially to the bead 9 of the lamp socket. The upperedge of this ring is rolled over to form an abutment 12 against which,in adjusted position, the inturned edge 13 of a screw collar 14 bears,whilea skirt 12 extends below the bead 11 of the ring and lies againstthe corresponding portion of the lamp socket casing below its bead 9.The diameter of the threaded collar 14 is such that it may be passedfreely over the bead 9 on the lamp socket to a osition above the samebefore the ring 10 is adjusted upon the bead. A central sleeve 15,preferably depending from the upper face of the shade holder, is of adiameter slightly greater than that of the collar 14 and is threaded toreceive the latter. From the lower edge of the sleeve 15 is inwardlyoflset a flange 16 with depending I ring 17 adapted, in adjustedposition, to surround the skirt 12 of the ring 10, thus to prevent thelatter from spreading, and serving to hold its bead 11 fast on the bead9 of the socket.

The operation and method of assembling the device on its support isreadily understood. The ring 14, having been passed above the bead 9,the split ring 10 is adjusted upon the support wit-h the beads 9 and 11in register. The shade holder body is then passed over the skirt 12 ofthe ring 10, until the flange 16 engages the lower edge of the bead 11.The screw collar 14 is then lowered and screwed into the sleeve 15 untilits inturned edge 13 rests against the abutment 12 of the ring 10. Thebead 11 is thus clamped between the flange 16 below and the flange 13above which are drawn together by the screwing down of the collar 14into the sleeve 15, thus locking the parts together, while the ring 17below and the flange 13 above, hold the ring 10 closed and thus preventthe escape of its bead 11 from the bead 9 of the socket, and thus insurethe support of the shade holder thereon.

It is not essential that the flange 16 and ring 17 be made integral withthe shade holder body 7, as illustrated, and various other modificationsmay be made in the structure illustrated without departing from r thespirit of my invention.

I claim as my invention 1. In combination with a supporting bead, anexpansible ring provided with a bead adapted to be positioned upon saidsupporting bead, a shade holder adapted to surround said expansible ringbelow the bead and hold the same in engagement with the supporting bead,in combination with means adjustable above said head for supporting saidshade holder upon said expansible ring.

2. In combination with a supporting bea an expansible ring having at itsupper edge an abutment flange and spaced below the same a bead adaptedto be adjusted over the supporting bead, together with a shade holderhaving a sleeve adapted to fit over said expansible ring below the headto hold the ring in adjusted position upon the supporting bead, anindependent collar adapted to be passed over the supporting bead, andprovided with an inturned edge adapted to engage the abutment flange ofthe expansible ring in adjusted position and means for securing saidsleeve to the shade holder body.

3. In combination with an electric lamp socket, having a supporting beadspaced from the lampreceiving end of the socket, a shade holdercomprising a threaded collar adapted to be passed over said supportingbead, an expansible beaded ring adapted to be adjusted upon saidsupporting bead, and a central depending sleeve on the shade holder bodyserving to retain said expansible ring on the supporting bead, andadapted to be engaged by said collar in adjusted position, together withengaging surfaces between said collar and expansible ring.

4:. In a shade holder, a central threaded sleeve with inwardly offsetflange, an eX- pansible beaded ring adjustable upon a supporting bead,and retained in position by said inwardly offset flange on the centralsleeve of the shade holder, together with a threaded collar adapted tobe passed over a supporting bead and screwed down into said threadedsleeve in adjusted position, and abutment means between said sleeve andsplit ring to insure the support 01 the holder upon said split ring inadjusted position.

5. In a shade holder, an expansible ring provided with a beadintermediate the ends of the ring and adapted to be adjusted upon asupporting bead, a shade holder. body member fitting over said ringbelow its bead and serving to hold the latter from below in engagementwith the supporting bead, in combination with means engaging said ringabove its bead on the one hand and serving to hold the latter from abovein engagement with the supporting bead and on the other hand engagingthe shade holder body whereby the latter is mounted on said expansibler111 1?). testimony whereof I have signed my name to this specification,in the presence of two subscribing witnesses.

EDWARD E. FORSTROM.

Witnesses:

GEO. B. THOMAS, Gr. l/V. Goonnmen.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

